In the maintenance of non-coal mining equipment, gas welding operations are often used to repair and weld various metal components, and Rubber Pipe Hoses are commonly used for gases like oxygen and acetylene needed in gas welding. Because non-coal mining equipment is complex and the working environment is variable with a lot of flammable materials, to ensure safety, special attention must be paid to the management of Rubber Pipe Hoses during operation. This includes regularly checking the hose's pressure resistance, ensuring the connectors are sealed, and preventing contamination of the hose by substances such as grease, acids, and bases.
Strictly adhering to the usage specifications for Rubber Pipe Hoses can not only prevent accidental rupture of oxygen and acetylene hoses and avoid fires and explosions caused by gas mixing, ensuring the safety of gas welding and cutting operations, but also ensure the safety of the mining working environment and the normal operation of equipment.
Rubber Pipe Hoses must have sufficient strength to withstand gas pressure and should undergo pressure tests. Oxygen hoses and acetylene hoses must not be mixed or substituted for one another. (The test pressure for oxygen hoses is 1.96MPa, and for acetylene hoses is 0.49MPa). The hoses should have enough pressure resistance and flame-retardant properties.
The joints and hoses of Rubber Pipe Hoses should be strictly leak-proof. Before connection, the hose should be blown clean, and it should be confirmed that there is no water in the hose before use. Oxygen must not be used to blow out blockages in acetylene hoses. Torch leaks and blockages should be checked and eliminated at any time to prevent the formation of oxygen-acetylene mixtures in the hose.
If the Rubber Pipe Hose of flammable gas (acetylene) becomes detached, ruptures, or catches fire during use, the torch flame should be extinguished first, then the gas supply stopped. In the event of an oxygen hose fire, the adjustment screw of the pressure reducer should be loosened or the valve of the oxygen cylinder closed to stop the gas supply. If flashback occurs and ignites the oxygen hose, the hose should be replaced.
During work, acetylene and oxygen hoses should be prevented from coming into contact with grease or metal solutions. It is forbidden to place acetylene and oxygen hoses on high-temperature pipes, electrical wires, or hot bodies, and they should not be laid together with welding cables or placed in transportation passages.
Attention should be paid to the maintenance of hoses during storage, use, and transportation, keeping them clean and undamaged. Hoses should be protected from sunlight, heat, rain, and snow, and protected from contact with acids, bases, oils, and organic solvents. The distance from heat sources should not be less than 1 meter, and the storage temperature should be -15 to 40°C. Before use, the inner wall of the hose should be blown clean of talc and debris to prevent torch blockages.
Additionally, to ensure safety in gas welding (cutting) operations, the valves of gas cylinders (oxygen pipes) connected to the high-pressure end of the oxygen meter should be fully opened to provide sufficient gas volume and stable pressure when a large amount of oxygen is output. This prevents sudden pressure drops during use, which can cause flashbacks and ignite the oxygen hose, resulting in explosions.
In summary, the safety of Rubber Pipe Hoses used in non-coal mining gas welding operations is related to the lives of operators and the stable development of enterprises. Therefore, we must attach great importance to the safety issues of Rubber Pipe Hoses and ensure their safe use in non-coal mining operations. Only in this way can we effectively prevent and reduce various accidents caused by Rubber Pipe Hose safety issues, ensuring the safe and smooth conduct of non-coal mining operations.
